    * {
            list-style: none;
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-size: 16px;
            color: #666;
            font-family: "Microsoft Yahei", Helvetica, Arial, sans-serif;
        }

        .con {
            width: 100vw;
            height: 100vh;
            background: linear-gradient(rgba(251, 122, 255, 0.2), rgb(146, 157, 255));
            display: flex;
            justify-content: center;
            align-items: center;
            line-height: 35px;

        }

        .login_form {
            background: #fff;
            padding: 20px 40px;
            max-width: 600px;
            margin: 0 auto;
            border-radius: 10px;
            box-shadow: 3px 3px 5px rgba(8, 8, 8, 0.3);
        }

        .login_form div {
            padding: 10px 0;
        }

        .login_form .tc {
            text-align: center;
        }

        .login_form .tc h1 {
            font-size: 25px;
        }

        .login_form div label {
            width: 100px;
            float: left;

            text-align: right;
        }

        input[type="password"],
        input[type="text"] {
            height: 35px;
            padding: 8px;
            border-radius: 5px;
            border: 1px solid #ccc;
        }

        input[type="submit"] {
            width: 50%;
            padding: 8px;
            cursor: pointer;
            border: none;
            background: rgb(146, 157, 255);
            color: #fff;
            border-radius: 8px;
            font-size: 18px;
        }

        input[type="submit"]:hover {

            color: rgb(251, 255, 0);
        }

        input[name="key"] {
            width: 70px;
        }

        #loginshowkey {
            display: block;
            float: right;
            margin-left: 5px;
        }